FACTBOX: Calendar of presidential primaries

(Reuters) - Here is a calendar of the remaining 2008 U.S. presidential nominating state primaries and caucuses. In some states the contests are nonbinding and separate caucuses or conventions are scheduled to select delegates to the national conventions.

MARCH

* March 4: Ohio, Rhode Island, Texas, Vermont

* March 8: Wyoming (Democratic)

* March 11: Mississippi

APRIL

* April 22: Pennsylvania

MAY

* May 6: Indiana, North Carolina

* May 13: Nebraska, West Virginia

* May 16-18: Hawaii's Republican Party will conduct its state convention; delegates are selected during a week-long process.

* May 20: Kentucky, Oregon

* May 27: Idaho (Republican)

JUNE

* June 3: Montana, New Mexico (Republican), South Dakota

AUGUST